/////////////////////////////////////////////////////////////////////////////
// Name: strconv.cpp
// Purpose: Unicode conversion classes
-// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin
+// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
-// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin
+// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#pragma hdrstop
#endif
+#ifndef WX_PRECOMP
+ #include "wx/intl.h"
+ #include "wx/log.h"
+#endif // WX_PRECOMP
+
+#ifdef __WXMSW__
+ #include "wx/msw/private.h"
+#endif
+
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
+#include "wx/strconv.h"
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+#if wxUSE_WCHAR_T
+ WXDLLEXPORT_DATA(wxMBConv) wxConvLibc;
+ WXDLLEXPORT_DATA(wxCSConv) wxConvLocal((const wxChar *)NULL);
+#else
+ // stand-ins in absence of wchar_t
+ WXDLLEXPORT_DATA(wxMBConv) wxConvLibc, wxConvFile;
+#endif // wxUSE_WCHAR_T
+
+WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if wxUSE_WCHAR_T
+
#ifdef __SALFORDC__
- #include <clib.h>
+ #include <clib.h>
#endif
-#ifdef HAVE_ICONV_H
- #include <iconv.h>
-#endif
-#ifdef HAVE_LANGINFO_H
- #include <langinfo.h>
+#ifdef HAVE_ICONV
+ #include <iconv.h>
#endif
-#include "wx/debug.h"
-#include "wx/strconv.h"
+#include "wx/encconv.h"
+#include "wx/fontmap.h"
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
-#ifdef WORDS_BIGENDIAN
-#define BSWAP_UCS4(str, len)
-#define BSWAP_UCS2(str, len)
-#else
#define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
-#define BSWAP_UCS2(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
-#define WC_NEED_BSWAP
-#endif
-#define BSWAP_UTF32(str, len) BSWAP_UCS4(str, len)
-#define BSWAP_UTF16(str, len) BSWAP_UCS2(str, len)
+#define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
+
+// under Unix SIZEOF_WCHAR_T is defined by configure, but under other platforms
+// it might be not defined - assume the most common value
+#ifndef SIZEOF_WCHAR_T
+ #define SIZEOF_WCHAR_T 2
+#endif // !defined(SIZEOF_WCHAR_T)
#if SIZEOF_WCHAR_T == 4
-#define WC_NAME "UCS4"
-#define WC_BSWAP BSWAP_UCS4
+ #define WC_NAME "UCS4"
+ #define WC_BSWAP BSWAP_UCS4
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UCS-4BE"
+ #else
+ #define WC_NAME_BEST "UCS-4LE"
+ #endif
#elif SIZEOF_WCHAR_T == 2
-#define WC_NAME "UTF16"
-#define WC_BSWAP BSWAP_UTF16
-#define WC_UTF16
+ #define WC_NAME "UTF16"
+ #define WC_BSWAP BSWAP_UTF16
+ #define WC_UTF16
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UTF-16BE"
+ #else
+ #define WC_NAME_BEST "UTF-16LE"
+ #endif
+#else // sizeof(wchar_t) != 2 nor 4
+ // I don't know what to do about this
+ #error "Weird sizeof(wchar_t): please report your platform details to wx-users mailing list"
#endif
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
-
-WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
-
// ============================================================================
// implementation
// ============================================================================
-#if wxUSE_WCHAR_T
+// ----------------------------------------------------------------------------
+// UTF-16 en/decoding
+// ----------------------------------------------------------------------------
-static size_t encode_utf16(wxUint32 input,wxUint16*output)
+#ifdef WC_UTF16
+
+static size_t encode_utf16(wxUint32 input, wchar_t *output)
{
- if (input<=0xffff) {
- if (output) *output++ = input;
- return 1;
- } else
- if (input>=0x110000) {
- return (size_t)-1;
- } else {
- if (output) {
- *output++ = (input >> 10)+0xd7c0;
- *output++ = (input&0x3ff)+0xdc00;
- }
- return 2;
- }
+ if (input<=0xffff)
+ {
+ if (output) *output++ = (wchar_t) input;
+ return 1;
+ }
+ else if (input>=0x110000)
+ {
+ return (size_t)-1;
+ }
+ else
+ {
+ if (output)
+ {
+ *output++ = (wchar_t) ((input >> 10)+0xd7c0);
+ *output++ = (wchar_t) ((input&0x3ff)+0xdc00);
+ }
+ return 2;
+ }
}
-static size_t decode_utf16(wxUint16*input,wxUint32&output)
+static size_t decode_utf16(const wchar_t* input, wxUint32& output)
{
- if ((*input<0xd800) || (*input>0xdfff)) {
- output = *input;
- return 1;
- } else
- if ((input[1]<0xdc00) || (input[1]>=0xdfff)) {
- output = *input;
- return (size_t)-1;
- } else {
- output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
- return 2;
- }
+ if ((*input<0xd800) || (*input>0xdfff))
+ {
+ output = *input;
+ return 1;
+ }
+ else if ((input[1]<0xdc00) || (input[1]>=0xdfff))
+ {
+ output = *input;
+ return (size_t)-1;
+ }
+ else
+ {
+ output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
+ return 2;
+ }
}
+#endif // WC_UTF16
+
// ----------------------------------------------------------------------------
// wxMBConv
// ----------------------------------------------------------------------------
-WXDLLEXPORT_DATA(wxMBConv) wxConvLibc;
-
size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
return wxMB2WC(buf, psz, n);
size_t wxMBConvGdk::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- if (buf) {
- return gdk_mbstowcs((GdkWChar *)buf, psz, n);
- } else {
- GdkWChar *nbuf = new GdkWChar[n=strlen(psz)];
- size_t len = gdk_mbstowcs(nbuf, psz, n);
- delete [] nbuf;
- return len;
- }
+ if (buf)
+ {
+ return gdk_mbstowcs((GdkWChar *)buf, psz, n);
+ }
+ else
+ {
+ GdkWChar *nbuf = new GdkWChar[n=strlen(psz)];
+ size_t len = gdk_mbstowcs(nbuf, psz, n);
+ delete[] nbuf;
+ return len;
+ }
}
size_t wxMBConvGdk::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
- char *mbstr = gdk_wcstombs((GdkWChar *)psz);
- size_t len = mbstr ? strlen(mbstr) : 0;
- if (buf) {
- if (len > n) len = n;
- memcpy(buf, psz, len);
- if (len < n) buf[len] = 0;
- }
- return len;
+ char *mbstr = gdk_wcstombs((GdkWChar *)psz);
+ size_t len = mbstr ? strlen(mbstr) : 0;
+ if (buf)
+ {
+ if (len > n)
+ len = n;
+ memcpy(buf, psz, len);
+ if (len < n)
+ buf[len] = 0;
+ }
+ return len;
}
#endif // GTK > 1.0
WXDLLEXPORT_DATA(wxMBConvUTF8) wxConvUTF8;
-static wxUint32 utf8_max[]={0x7f,0x7ff,0xffff,0x1fffff,0x3ffffff,0x7fffffff,0xffffffff};
+static wxUint32 utf8_max[]=
+ { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- size_t len = 0;
-
- while (*psz && ((!buf) || (len<n))) {
- unsigned char cc=*psz++, fc=cc;
- unsigned cnt;
- for (cnt=0; fc&0x80; cnt++) fc<<=1;
- if (!cnt) {
- // plain ASCII char
- if (buf) *buf++=cc;
- len++;
- } else {
- cnt--;
- if (!cnt) {
- // invalid UTF-8 sequence
- return (size_t)-1;
- } else {
- unsigned ocnt=cnt-1;
- wxUint32 res=cc&(0x3f>>cnt);
- while (cnt--) {
- cc = *psz++;
- if ((cc&0xC0)!=0x80) {
- // invalid UTF-8 sequence
- return (size_t)-1;
- }
- res=(res<<6)|(cc&0x3f);
- }
- if (res<=utf8_max[ocnt]) {
- // illegal UTF-8 encoding
- return (size_t)-1;
+ size_t len = 0;
+
+ while (*psz && ((!buf) || (len < n)))
+ {
+ unsigned char cc = *psz++, fc = cc;
+ unsigned cnt;
+ for (cnt = 0; fc & 0x80; cnt++)
+ fc <<= 1;
+ if (!cnt)
+ {
+ // plain ASCII char
+ if (buf)
+ *buf++ = cc;
+ len++;
}
+ else
+ {
+ cnt--;
+ if (!cnt)
+ {
+ // invalid UTF-8 sequence
+ return (size_t)-1;
+ }
+ else
+ {
+ unsigned ocnt = cnt - 1;
+ wxUint32 res = cc & (0x3f >> cnt);
+ while (cnt--)
+ {
+ cc = *psz++;
+ if ((cc & 0xC0) != 0x80)
+ {
+ // invalid UTF-8 sequence
+ return (size_t)-1;
+ }
+ res = (res << 6) | (cc & 0x3f);
+ }
+ if (res <= utf8_max[ocnt])
+ {
+ // illegal UTF-8 encoding
+ return (size_t)-1;
+ }
#ifdef WC_UTF16
- size_t pa = encode_utf16(res, buf);
- if (pa == (size_t)-1)
- return (size_t)-1;
- if (buf) buf+=pa;
- len+=pa;
-#else
- if (buf) *buf++=res;
- len++;
-#endif
- }
+ size_t pa = encode_utf16(res, buf);
+ if (pa == (size_t)-1)
+ return (size_t)-1;
+ if (buf)
+ buf += pa;
+ len += pa;
+#else // !WC_UTF16
+ if (buf)
+ *buf++ = res;
+ len++;
+#endif // WC_UTF16/!WC_UTF16
+ }
+ }
}
- }
- if (buf && (len<n)) *buf = 0;
- return len;
+ if (buf && (len < n))
+ *buf = 0;
+ return len;
}
size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
- size_t len = 0;
+ size_t len = 0;
- while (*psz && ((!buf) || (len<n))) {
- wxUint32 cc;
+ while (*psz && ((!buf) || (len < n)))
+ {
+ wxUint32 cc;
#ifdef WC_UTF16
- size_t pa = decode_utf16(psz,cc);
- psz += (pa == (size_t)-1) ? 1 : pa;
+ size_t pa = decode_utf16(psz, cc);
+ psz += (pa == (size_t)-1) ? 1 : pa;
#else
- cc=(*psz++)&0x7fffffff;
+ cc=(*psz++) & 0x7fffffff;
#endif
- unsigned cnt;
- for (cnt=0; cc>utf8_max[cnt]; cnt++);
- if (!cnt) {
- // plain ASCII char
- if (buf) *buf++=cc;
- len++;
- } else {
- len+=cnt+1;
- if (buf) {
- *buf++=(-128>>cnt)|((cc>>(cnt*6))&(0x3f>>cnt));
- while (cnt--)
- *buf++=0x80|((cc>>(cnt*6))&0x3f);
- }
- }
- }
- if (buf && (len<n)) *buf = 0;
- return len;
-}
-
-// ----------------------------------------------------------------------------
-// specified character set
-// ----------------------------------------------------------------------------
+ unsigned cnt;
+ for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
+ if (!cnt)
+ {
+ // plain ASCII char
+ if (buf)
+ *buf++ = (char) cc;
+ len++;
+ }
-WXDLLEXPORT_DATA(wxCSConv) wxConvLocal((const wxChar *)NULL);
+ else
+ {
+ len += cnt + 1;
+ if (buf)
+ {
+ *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
+ while (cnt--)
+ *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
+ }
+ }
+ }
-#include "wx/encconv.h"
-#include "wx/fontmap.h"
+ if (buf && (len<n)) *buf = 0;
+ return len;
+}
-// TODO: add some tables here
-// - perhaps common encodings to common codepages (for Win32)
-// - perhaps common encodings to objects ("UTF8" -> wxConvUTF8)
-// - move wxEncodingConverter meat in here
+// ============================================================================
+// wxCharacterSet and derived classes
+// ============================================================================
-#ifdef __WIN32__
-#include "wx/msw/registry.h"
-// this should work if M$ Internet Exploiter is installed
-static long CharsetToCodepage(const wxChar *name)
-{
- if (!name) return GetACP();
- long CP=-1;
- wxString cn(name);
- do {
- wxString path(wxT("MIME\\Database\\Charset\\"));
- path += cn;
- wxRegKey key(wxRegKey::HKCR,path);
-
- /* two cases: either there's an AliasForCharset string,
- * or there are Codepage and InternetEncoding dwords.
- * The InternetEncoding gives us the actual encoding,
- * the Codepage just says which Windows character set to
- * use when displaying the data.
- */
- if (key.QueryValue(wxT("InternetEncoding"),&CP)) break;
- // no encoding, see if it's an alias
- if (!key.QueryValue(wxT("AliasForCharset"),cn)) break;
- } while (1);
- return CP;
-}
-#endif
+// ----------------------------------------------------------------------------
+// wxCharacterSet is the ABC for the classes below
+// ----------------------------------------------------------------------------
class wxCharacterSet
{
public:
- const wxChar*cname;
- wxCharacterSet(const wxChar*name) : cname(name) {}
- virtual ~wxCharacterSet() {}
- virtual size_t MB2WC(wchar_t*buf, const char*psz, size_t n) { return (size_t)-1; }
- virtual size_t WC2MB(char*buf, const wchar_t*psz, size_t n) { return (size_t)-1; }
- virtual bool usable() { return FALSE; }
+ wxCharacterSet(const wxChar*name) : cname(name) {}
+ virtual ~wxCharacterSet() {}
+ virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) = 0;
+ virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) = 0;
+ virtual bool usable() const = 0;
+public:
+ const wxChar*cname;
};
+// ----------------------------------------------------------------------------
+// ID_CharSet: implementation of wxCharacterSet using an existing wxMBConv
+// ----------------------------------------------------------------------------
+
class ID_CharSet : public wxCharacterSet
{
public:
- wxMBConv*work;
- ID_CharSet(const wxChar*name,wxMBConv*cnv) : wxCharacterSet(name), work(cnv) {}
- size_t MB2WC(wchar_t*buf, const char*psz, size_t n)
- { return work ? work->MB2WC(buf,psz,n) : (size_t)-1; }
- size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
- { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; }
- bool usable() { return work!=NULL; }
+ ID_CharSet(const wxChar *name, wxMBConv *cnv)
+ : wxCharacterSet(name), work(cnv) {}
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
+ { return work ? work->MB2WC(buf,psz,n) : (size_t)-1; }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
+ { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; }
+
+ bool usable() const
+ { return work!=NULL; }
+public:
+ wxMBConv*work;
};
-#ifdef HAVE_ICONV_H
+
+// ============================================================================
+// The classes doing conversion using the iconv_xxx() functions
+// ============================================================================
+
+#ifdef HAVE_ICONV
+
+// VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG
+// if output buffer is _exactly_ as big as needed. Such case is (unless there's
+// yet another bug in glibc) the only case when iconv() returns with (size_t)-1
+// (which means error) and says there are 0 bytes left in the input buffer --
+// when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
+// this alternative test for iconv() failure.
+// [This bug does not appear in glibc 2.2.]
+#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
+#define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
+ (errno != E2BIG || bufLeft != 0))
+#else
+#define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1)
+#endif
+
+#define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x))
+
+// ----------------------------------------------------------------------------
+// IC_CharSet: encapsulates an iconv character set
+// ----------------------------------------------------------------------------
+
class IC_CharSet : public wxCharacterSet
{
public:
- iconv_t m2w, w2m;
- IC_CharSet(const wxChar*name) : wxCharacterSet(name), m2w((iconv_t)-1), w2m((iconv_t)-1) {}
- ~IC_CharSet() {
- if (m2w!=(iconv_t)-1) iconv_close(m2w);
- if (w2m!=(iconv_t)-1) iconv_close(w2m);
- }
- void LoadM2W() { if (m2w==(iconv_t)-1) m2w=iconv_open(WC_NAME,wxConvLibc.cWX2MB(cname)); }
- void LoadW2M() { if (w2m==(iconv_t)-1) w2m=iconv_open(wxConvLibc.cWX2MB(cname),WC_NAME); }
- size_t MB2WC(wchar_t*buf, const char*psz, size_t n) {
- LoadM2W();
+ IC_CharSet(const wxChar *name);
+ virtual ~IC_CharSet();
+
+ virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n);
+ virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n);
+
+ bool usable() const
+ { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
+
+protected:
+ // the iconv handlers used to translate from multibyte to wide char and in
+ // the other direction
+ iconv_t m2w,
+ w2m;
+
+private:
+ // the name (for iconv_open()) of a wide char charset - if none is
+ // available on this machine, it will remain NULL
+ static const char *ms_wcCharsetName;
+
+ // true if the wide char encoding we use (i.e. ms_wcCharsetName) has
+ // different endian-ness than the native one
+ static bool ms_wcNeedsSwap;
+};
+
+const char *IC_CharSet::ms_wcCharsetName = NULL;
+bool IC_CharSet::ms_wcNeedsSwap = FALSE;
+
+IC_CharSet::IC_CharSet(const wxChar *name)
+ : wxCharacterSet(name)
+{
+ // check for charset that represents wchar_t:
+ if (ms_wcCharsetName == NULL)
+ {
+ ms_wcNeedsSwap = FALSE;
+
+ // try charset with explicit bytesex info (e.g. "UCS-4LE"):
+ ms_wcCharsetName = WC_NAME_BEST;
+ m2w = iconv_open(ms_wcCharsetName, wxConvLibc.cWX2MB(name));
+
+ if (m2w == (iconv_t)-1)
+ {
+ // try charset w/o bytesex info (e.g. "UCS4")
+ // and check for bytesex ourselves:
+ ms_wcCharsetName = WC_NAME;
+ m2w = iconv_open(ms_wcCharsetName, wxConvLibc.cWX2MB(name));
+
+ // last bet, try if it knows WCHAR_T pseudo-charset
+ if (m2w == (iconv_t)-1)
+ {
+ ms_wcCharsetName = "WCHAR_T";
+ m2w = iconv_open(ms_wcCharsetName, wxConvLibc.cWX2MB(name));
+ }
+
+ if (m2w != (iconv_t)-1)
+ {
+ char buf[2], *bufPtr;
+ wchar_t wbuf[2], *wbufPtr;
+ size_t insz, outsz;
+ size_t res;
+
+ buf[0] = 'A';
+ buf[1] = 0;
+ wbuf[0] = 0;
+ insz = 2;
+ outsz = SIZEOF_WCHAR_T * 2;
+ wbufPtr = wbuf;
+ bufPtr = buf;
+
+ res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
+ (char**)&wbufPtr, &outsz);
+
+ if (ICONV_FAILED(res, insz))
+ {
+ ms_wcCharsetName = NULL;
+ wxLogLastError(wxT("iconv"));
+ wxLogError(_("Convertion to charset '%s' doesn't work."), name);
+ }
+ else
+ {
+ ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0];
+ }
+ }
+ else
+ {
+ ms_wcCharsetName = NULL;
+
+ // VS: we must not output an error here, since wxWindows will safely
+ // fall back to using wxEncodingConverter.
+ wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
+ //wxLogError(
+ }
+ }
+ wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap);
+ }
+ else // we already have ms_wcCharsetName
+ {
+ m2w = iconv_open(ms_wcCharsetName, wxConvLibc.cWX2MB(name));
+ }
+
+ // NB: don't ever pass NULL to iconv_open(), it may crash!
+ if ( ms_wcCharsetName )
+ {
+ w2m = iconv_open(wxConvLibc.cWX2MB(name), ms_wcCharsetName);
+ }
+ else
+ {
+ w2m = (iconv_t)-1;
+ }
+}
+
+IC_CharSet::~IC_CharSet()
+{
+ if ( m2w != (iconv_t)-1 )
+ iconv_close(m2w);
+ if ( w2m != (iconv_t)-1 )
+ iconv_close(w2m);
+}
+
+size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n)
+{
size_t inbuf = strlen(psz);
- size_t outbuf = n*SIZEOF_WCHAR_T;
+ size_t outbuf = n * SIZEOF_WCHAR_T;
size_t res, cres;
- fprintf(stderr,"IC Convert to WC using %s\n",(const char*)wxConvLibc.cWX2MB(cname));
- if (buf) {
- // have destination buffer, convert there
- cres = iconv(m2w,&psz,&inbuf,(char**)&buf,&outbuf);
- res = n-(outbuf/SIZEOF_WCHAR_T);
- // convert to native endianness
- WC_BSWAP(buf, res)
- } else {
- // no destination buffer... convert using temp buffer
- // to calculate destination buffer requirement
- wchar_t tbuf[8];
- res = 0;
- do {
- buf = tbuf; outbuf = 8*SIZEOF_WCHAR_T;
- cres = iconv(m2w,&psz,&inbuf,(char**)&buf,&outbuf);
- res += 8-(outbuf/SIZEOF_WCHAR_T);
- } while ((cres==(size_t)-1) && (errno==E2BIG));
- }
- if (cres==(size_t)-1) return (size_t)-1;
+ // VS: Use these instead of psz, buf because iconv() modifies its arguments:
+ wchar_t *bufPtr = buf;
+ const char *pszPtr = psz;
+
+ if (buf)
+ {
+ // have destination buffer, convert there
+ cres = iconv(m2w,
+ ICONV_CHAR_CAST(&pszPtr), &inbuf,
+ (char**)&bufPtr, &outbuf);
+ res = n - (outbuf / SIZEOF_WCHAR_T);
+
+ if (ms_wcNeedsSwap)
+ {
+ // convert to native endianness
+ WC_BSWAP(buf /* _not_ bufPtr */, res)
+ }
+ }
+ else
+ {
+ // no destination buffer... convert using temp buffer
+ // to calculate destination buffer requirement
+ wchar_t tbuf[8];
+ res = 0;
+ do {
+ bufPtr = tbuf;
+ outbuf = 8*SIZEOF_WCHAR_T;
+
+ cres = iconv(m2w,
+ ICONV_CHAR_CAST(&pszPtr), &inbuf,
+ (char**)&bufPtr, &outbuf );
+
+ res += 8-(outbuf/SIZEOF_WCHAR_T);
+ } while ((cres==(size_t)-1) && (errno==E2BIG));
+ }
+
+ if (ICONV_FAILED(cres, inbuf))
+ {
+ //VS: it is ok if iconv fails, hence trace only
+ wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
+ return (size_t)-1;
+ }
+
return res;
- }
- size_t WC2MB(char*buf, const wchar_t*psz, size_t n) {
- LoadW2M();
+}
+
+size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n)
+{
#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530)
- size_t inbuf = std::wcslen(psz);
+ size_t inbuf = std::wcslen(psz) * SIZEOF_WCHAR_T;
#else
- size_t inbuf = ::wcslen(psz);
+ size_t inbuf = ::wcslen(psz) * SIZEOF_WCHAR_T;
#endif
size_t outbuf = n;
size_t res, cres;
- fprintf(stderr,"IC Convert from WC using %s\n",(const char*)wxConvLibc.cWX2MB(cname));
-#ifdef WC_NEED_BSWAP
- // need to copy to temp buffer to switch endianness
- // this absolutely doesn't rock!
- // (no, doing WC_BSWAP twice on the original buffer won't help, as it
- // could be in read-only memory, or be accessed in some other thread)
- wchar_t*tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
- memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
- WC_BSWAP(tmpbuf, inbuf)
- psz=tmpbuf;
-#endif
- if (buf) {
- // have destination buffer, convert there
- cres = iconv(w2m,(const char**)&psz,&inbuf,&buf,&outbuf);
- res = n-outbuf;
- } else {
- // no destination buffer... convert using temp buffer
- // to calculate destination buffer requirement
- char tbuf[16];
- res = 0;
- do {
- buf = tbuf; outbuf = 16;
- cres = iconv(w2m,(const char**)&psz,&inbuf,&buf,&outbuf);
- res += 16 - outbuf;
- } while ((cres==(size_t)-1) && (errno==E2BIG));
- }
-#ifdef WC_NEED_BSWAP
- free(tmpbuf);
-#endif
- if (cres==(size_t)-1) return (size_t)-1;
+
+ wchar_t *tmpbuf = 0;
+
+ if (ms_wcNeedsSwap)
+ {
+ // need to copy to temp buffer to switch endianness
+ // this absolutely doesn't rock!
+ // (no, doing WC_BSWAP twice on the original buffer won't help, as it
+ // could be in read-only memory, or be accessed in some other thread)
+ tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
+ memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
+ WC_BSWAP(tmpbuf, inbuf)
+ psz=tmpbuf;
+ }
+
+ if (buf)
+ {
+ // have destination buffer, convert there
+ cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+
+ res = n-outbuf;
+ }
+ else
+ {
+ // no destination buffer... convert using temp buffer
+ // to calculate destination buffer requirement
+ char tbuf[16];
+ res = 0;
+ do {
+ buf = tbuf; outbuf = 16;
+
+ cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+
+ res += 16 - outbuf;
+ } while ((cres==(size_t)-1) && (errno==E2BIG));
+ }
+
+ if (ms_wcNeedsSwap)
+ {
+ free(tmpbuf);
+ }
+
+ if (ICONV_FAILED(cres, inbuf))
+ {
+ //VS: it is ok if iconv fails, hence trace only
+ wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
+ return (size_t)-1;
+ }
+
return res;
- }
- bool usable() { return TRUE; }
-};
-#endif
+}
+
+#endif // HAVE_ICONV
+
+// ============================================================================
+// Win32 conversion classes
+// ============================================================================
+
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
+
+extern long wxCharsetToCodepage(const wxChar *charset); // from utils.cpp
-#ifdef __WIN32__
class CP_CharSet : public wxCharacterSet
{
public:
- long CodePage;
- CP_CharSet(const wxChar*name) : wxCharacterSet(name), CodePage(CharsetToCodepage(name)) {}
- size_t MB2WC(wchar_t*buf, const char*psz, size_t n) {
- size_t len = MultiByteToWideChar(CodePage,0,psz,-1,buf,buf?n:0);
- return len?len:(size_t)-1;
- }
- size_t WC2MB(char*buf, const wchar_t*psz, size_t n) {
- size_t len = WideCharToMultiByte(CodePage,0,psz,-1,buf,buf?n:0,NULL,NULL);
- return len?len:(size_t)-1;
- }
- bool usable() { return CodePage!=-1; }
+ CP_CharSet(const wxChar* name)
+ : wxCharacterSet(name)
+ {
+ m_CodePage = wxCharsetToCodepage(name);
+ }
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
+ {
+ size_t len =
+ MultiByteToWideChar(m_CodePage, 0, psz, -1, buf, buf ? n : 0);
+ //VS: returns # of written chars for buf!=NULL and *size*
+ // needed buffer for buf==NULL
+ return len ? (buf ? len : len-1) : (size_t)-1;
+ }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
+ {
+ size_t len = WideCharToMultiByte(m_CodePage, 0, psz, -1, buf,
+ buf ? n : 0, NULL, NULL);
+ //VS: returns # of written chars for buf!=NULL and *size*
+ // needed buffer for buf==NULL
+ return len ? (buf ? len : len-1) : (size_t)-1;
+ }
+
+ bool usable() const
+ { return m_CodePage != -1; }
+
+public:
+ long m_CodePage;
};
-#endif
+#endif // __WIN32__
+
+// ============================================================================
+// wxEncodingConverter based conversion classes
+// ============================================================================
+
+#if wxUSE_FONTMAP
class EC_CharSet : public wxCharacterSet
{
public:
- // temporarily just use wxEncodingConverter stuff,
- // so that it works while a better implementation is built
- wxFontEncoding enc;
- wxEncodingConverter m2w, w2m;
- EC_CharSet(const wxChar*name) : wxCharacterSet(name), enc(wxFONTENCODING_SYSTEM)
- {
- if (name) enc = wxTheFontMapper->CharsetToEncoding(name, FALSE);
- m2w.Init(enc, wxFONTENCODING_UNICODE);
- w2m.Init(wxFONTENCODING_UNICODE, enc);
- }
- size_t MB2WC(wchar_t*buf, const char*psz, size_t n) {
- size_t inbuf = strlen(psz);
- fprintf(stderr,"EC Convert to WC using %d\n",enc);
- if (buf) m2w.Convert(psz,buf);
- return inbuf;
- }
- size_t WC2MB(char*buf, const wchar_t*psz, size_t n) {
-#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530)
- size_t inbuf = std::wcslen(psz);
+ // temporarily just use wxEncodingConverter stuff,
+ // so that it works while a better implementation is built
+ EC_CharSet(const wxChar* name) : wxCharacterSet(name),
+ enc(wxFONTENCODING_SYSTEM)
+ {
+ if (name)
+ enc = wxTheFontMapper->CharsetToEncoding(name, FALSE);
+
+ m_ok = m2w.Init(enc, wxFONTENCODING_UNICODE) &&
+ w2m.Init(wxFONTENCODING_UNICODE, enc);
+ }
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n))
+ {
+ size_t inbuf = strlen(psz);
+ if (buf)
+ m2w.Convert(psz,buf);
+ return inbuf;
+ }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n))
+ {
+#if ( defined(__BORLANDC__) && (__BORLANDC__ > 0x530) ) \
+ || ( defined(__MWERKS__) && defined(__WXMSW__) )
+ size_t inbuf = std::wcslen(psz);
#else
- size_t inbuf = ::wcslen(psz);
+ size_t inbuf = ::wcslen(psz);
#endif
- fprintf(stderr,"EC Convert from WC using %d\n",enc);
- if (buf) w2m.Convert(psz,buf);
- return inbuf;
- }
- bool usable() { return (enc!=wxFONTENCODING_SYSTEM) && (enc!=wxFONTENCODING_DEFAULT); }
+ if (buf)
+ w2m.Convert(psz,buf);
+
+ return inbuf;
+ }
+
+ bool usable() const { return m_ok; }
+
+public:
+ wxFontEncoding enc;
+ wxEncodingConverter m2w, w2m;
+
+ // were we initialized successfully?
+ bool m_ok;
};
+#endif // wxUSE_FONTMAP
+
+// ----------------------------------------------------------------------------
+// the function creating the wxCharacterSet for the specified charset on the
+// current system, trying all possibilities
+// ----------------------------------------------------------------------------
+
static wxCharacterSet *wxGetCharacterSet(const wxChar *name)
{
- wxCharacterSet *cset = NULL;
- if (name) {
- if (!wxStricmp(name, wxT("UTF8")) || !wxStricmp(name, wxT("UTF-8"))) {
- cset = new ID_CharSet(name, &wxConvUTF8);
- } else {
-#ifdef HAVE_ICONV_H
- cset = new IC_CharSet(name); // may not take NULL
-#endif
+ // check for the special case of ASCII charset
+#if wxUSE_FONTMAP
+ if ( wxTheFontMapper->CharsetToEncoding(name) == wxFONTENCODING_DEFAULT )
+#else // wxUSE_FONTMAP
+ if ( !name )
+#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
+ {
+ // don't convert at all
+ return NULL;
}
- }
- if (cset && cset->usable()) return cset;
- if (cset) delete cset;
-#ifdef __WIN32__
- cset = new CP_CharSet(name); // may take NULL
- if (cset->usable()) return cset;
-#endif
- if (cset) delete cset;
- cset = new EC_CharSet(name);
- if (cset->usable()) return cset;
- delete cset;
- return NULL;
+
+ // the test above must have taken care of this case
+ wxCHECK_MSG( name, NULL, _T("NULL name must be wxFONTENCODING_DEFAULT") );
+
+ wxCharacterSet *cset;
+
+ if ( wxStricmp(name, wxT("UTF8")) == 0 || wxStricmp(name, wxT("UTF-8")) == 0)
+ {
+ cset = new ID_CharSet(name, &wxConvUTF8);
+ }
+ else
+ {
+#ifdef HAVE_ICONV
+ cset = new IC_CharSet(name);
+#else // !HAVE_ICONV
+ cset = NULL;
+#endif // HAVE_ICONV/!HAVE_ICONV
+ }
+
+ // it can only be NULL in this case
+#ifndef HAVE_ICONV
+ if ( cset )
+#endif // !HAVE_ICONV
+ {
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+ }
+
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
+ cset = new CP_CharSet(name);
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+#endif // __WIN32__
+
+#if wxUSE_FONTMAP
+ cset = new EC_CharSet(name);
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+#endif // wxUSE_FONTMAP
+
+ wxLogError(_("Cannot convert from encoding '%s'!"), name);
+
+ return NULL;
}
+// ============================================================================
+// wxCSConv implementation
+// ============================================================================
+
wxCSConv::wxCSConv(const wxChar *charset)
{
- m_name = (wxChar *) NULL;
- m_cset = (wxCharacterSet *) NULL;
- m_deferred = TRUE;
- SetName(charset);
+ m_name = (wxChar *)NULL;
+ m_cset = (wxCharacterSet *) NULL;
+ m_deferred = TRUE;
+
+ SetName(charset);
}
wxCSConv::~wxCSConv()
{
- if (m_name) free(m_name);
- if (m_cset) delete m_cset;
+ free(m_name);
+ delete m_cset;
}
void wxCSConv::SetName(const wxChar *charset)
{
- if (charset) {
- m_name = wxStrdup(charset);
- m_deferred = TRUE;
- }
+ if (charset)
+ {
+ m_name = wxStrdup(charset);
+ m_deferred = TRUE;
+ }
}
void wxCSConv::LoadNow()
{
-// wxPrintf(wxT("Conversion request\n"));
- if (m_deferred) {
- if (!m_name) {
-#ifdef __UNIX__
-#if defined(HAVE_LANGINFO_H) && defined(CODESET)
- // GNU libc provides current character set this way
- char*alang = nl_langinfo(CODESET);
- if (alang) SetName(wxConvLibc.cMB2WX(alang));
- else
-#endif
- // if we can't get at the character set directly,
- // try to see if it's in the environment variables
- // (in most cases this won't work, but I was out of ideas)
- {
- wxChar *lang = wxGetenv(wxT("LC_ALL"));
- if (!lang) lang = wxGetenv(wxT("LC_CTYPE"));
- if (!lang) lang = wxGetenv(wxT("LANG"));
- wxChar *dot = lang ? wxStrchr(lang, wxT('.')) : (wxChar *)NULL;
- if (dot) SetName(dot+1);
- }
-#endif
+ if (m_deferred)
+ {
+ if ( !m_name )
+ {
+ wxString name = wxLocale::GetSystemEncodingName();
+ if ( !name.empty() )
+ SetName(name);
+ }
+
+ // wxGetCharacterSet() complains about NULL name
+ m_cset = m_name ? wxGetCharacterSet(m_name) : NULL;
+ m_deferred = FALSE;
}
- m_cset = wxGetCharacterSet(m_name);
- m_deferred = FALSE;
- }
}
size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- ((wxCSConv *)this)->LoadNow(); // discard constness
- if (m_cset)
- return m_cset->MB2WC(buf, psz, n);
-
- // latin-1 (direct)
- size_t len=strlen(psz);
- if (buf) {
- for (size_t c=0; c<=len; c++)
- buf[c] = (unsigned char)(psz[c]);
- }
- return len;
-}
+ ((wxCSConv *)this)->LoadNow(); // discard constness
-size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
-{
- ((wxCSConv *)this)->LoadNow(); // discard constness
- if (m_cset)
- return m_cset->WC2MB(buf, psz, n);
+ if (m_cset)
+ return m_cset->MB2WC(buf, psz, n);
- // latin-1 (direct)
-#if defined(__BORLANDC__) && (__BORLANDC__ > 0x530)
- size_t len=std::wcslen(psz);
-#else
- size_t len=::wcslen(psz);
-#endif
- if (buf) {
- for (size_t c=0; c<=len; c++)
- buf[c] = (psz[c]>0xff) ? '?' : psz[c];
- }
- return len;
-}
+ // latin-1 (direct)
+ size_t len = strlen(psz);
-#ifdef HAVE_ICONV_H
-class IC_CharSetConverter
-{
-public:
- iconv_t cnv;
- IC_CharSetConverter(IC_CharSet*from,IC_CharSet*to) {
- cnv=iconv_open(wxConvLibc.cWX2MB(to->cname),wxConvLibc.cWX2MB(from->cname));
- }
- ~IC_CharSetConverter() {
- if (cnv!=(iconv_t)-1) iconv_close(cnv);
- }
- size_t Convert(char*buf, const char*psz, size_t n) {
- size_t inbuf = strlen(psz);
- size_t outbuf = n;
- size_t res = iconv(cnv,&psz,&inbuf,&buf,&outbuf);
- if (res==(size_t)-1) return (size_t)-1;
- return n-outbuf;
- }
-};
-#endif
+ if (buf)
+ {
+ for (size_t c = 0; c <= len; c++)
+ buf[c] = (unsigned char)(psz[c]);
+ }
-class EC_CharSetConverter
+ return len;
+}
+
+size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
-public:
- wxEncodingConverter cnv;
- EC_CharSetConverter(EC_CharSet*from,EC_CharSet*to) {
- cnv.Init(from->enc,to->enc);
- }
- size_t Convert(char*buf, const char*psz, size_t n) {
- size_t inbuf = strlen(psz);
- if (buf) cnv.Convert(psz,buf);
- return inbuf;
- }
-};
+ ((wxCSConv *)this)->LoadNow(); // discard constness
-#else // !wxUSE_WCHAR_T
+ if (m_cset)
+ return m_cset->WC2MB(buf, psz, n);
-// ----------------------------------------------------------------------------
-// stand-ins in absence of wchar_t
-// ----------------------------------------------------------------------------
+ // latin-1 (direct)
+#if ( defined(__BORLANDC__) && (__BORLANDC__ > 0x530) ) \
+ || ( defined(__MWERKS__) && defined(__WXMSW__) )
+ size_t len=std::wcslen(psz);
+#else
+ size_t len=::wcslen(psz);
+#endif
+ if (buf)
+ {
+ for (size_t c = 0; c <= len; c++)
+ buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
+ }
-WXDLLEXPORT_DATA(wxMBConv) wxConvLibc, wxConvFile;
+ return len;
+}
#endif // wxUSE_WCHAR_T
projects / wxWidgets.git / blobdiff